Calendar



FIG. 1 is a top perspective view of a calendar showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a back view thereof;

FIG. 7 is a front view thereof;

FIG. 8 is a perspective view in the open position thereof; and,

FIG. 9 is a perspective view in the semi-closed position thereof.

The ornamental design for a calendar, as shown and described.